Refrigerant leakage diagnosing system and program

Abstract

The present disclosure provides a refrigerant leakage diagnosing system that enables a subject to determine the presence or absence of refrigerant leakage, taking into account the validity of the refrigerant leakage diagnosis result.　A refrigerant leakage diagnosing system according to the present disclosure diagnoses refrigerant leakage of a refrigeration cycle device, said system being provided with a display unit that displays first information indicating that refrigerant leakage has occurred when a refrigerant leakage probability based on operation data including a detection value from a sensor included in the refrigeration cycle device is equal to or greater than a first threshold, and displays second information indicating that the detection value from the sensor is abnormal when the detection value from the sensor is abnormal, wherein the display unit displays the first information and the second information on the same first screen.

Description

Refrigerant leak diagnostic system and program

[0001] The present disclosure relates to a refrigerant leak diagnosis system and program.

[0002] Patent Document 1 discloses a refrigerant leakage management system that determines whether or not a refrigerant leaks from a refrigerant circuit based on the detection result of a refrigerant leakage state detected by a detection unit.

[0003] Japanese Patent Application Laid-Open No. 2022-179215

[0004] The present disclosure provides a refrigerant leak diagnosis system and program that enable a subject to properly determine whether or not a refrigerant leak exists.

[0005] The refrigerant leak diagnosis system of the present disclosure is a refrigerant leak diagnosis system that diagnoses refrigerant leaks in a refrigeration cycle device, and is equipped with a display unit that displays first information indicating that a refrigerant leak has occurred when the probability of refrigerant leak based on operating data including the detection value of a sensor possessed by the refrigeration cycle device is equal to or greater than a first threshold, and displays second information indicating that the detection value of the sensor is abnormal when the detection value of the sensor is abnormal, and the display unit displays the first information and the second information on the same first screen.

[0006] In addition, the refrigerant leak diagnosis system of the present disclosure is a refrigerant leak diagnosis system that diagnoses refrigerant leaks in a refrigeration cycle device, and is equipped with a display unit that displays first information indicating that a refrigerant leak has occurred when the probability of refrigerant leak based on operating data including the detection value of a sensor possessed by the refrigeration cycle device is equal to or greater than a first threshold, and when the detection value of the sensor is abnormal, the display unit displays on the same screen as the first information that the refrigerant leak diagnosis result lacks validity.

[0007] In addition, the program of the present disclosure causes the processor to function as a display unit that displays first information indicating that a refrigerant is leaking as a diagnostic result of a refrigerant leak in the refrigeration cycle device when the probability of a refrigerant leak based on operating data including a detection value of a sensor possessed by the refrigeration cycle device is equal to or greater than a first threshold, and that displays second information indicating that the detection value of the sensor is abnormal when the detection value of the sensor is abnormal, and the display unit displays the first information and the second information on the same first screen.

[0008] The program of the present disclosure also causes the processor to function as a display unit that displays first information indicating a refrigerant leak as a diagnosis result of a refrigerant leak in the refrigeration cycle device when a refrigerant leakage probability based on operating data including a detection value of a sensor possessed by the refrigeration cycle device is equal to or greater than a first threshold, and when the detection value of the sensor is abnormal, the display unit displays on the same screen as the first information that the refrigerant leakage diagnosis result is invalid. Note that this specification includes all of the contents of Japanese Patent Application No. 2024-048087, filed on March 25, 2024.

[0009] The refrigerant leak diagnosis system and program disclosed herein can examine the validity of a refrigerant leak diagnosis result that indicates the occurrence of a refrigerant leak. This allows a subject to determine whether or not a refrigerant leak exists based on the validity of the refrigerant leak diagnosis result, thereby enabling the subject to properly determine whether or not a refrigerant leak exists.

[0010] FIG. 1 is a diagram showing the configuration of a refrigerant leakage diagnosis system in embodiment 1. FIG. 2 is a diagram showing the configuration of a server device and a terminal device in embodiment 1. FIG. 3 is a diagram showing an example of a first management DB and a second management DB in embodiment 1. FIG. 4 is a diagram showing an example of a first screen in embodiment 1. FIG. 5 is a diagram showing an example of a second screen in embodiment 1. FIG. 6 is a flowchart showing the operation of a terminal device and a server device in embodiment 1. FIG. 7 is a diagram showing an example of a third screen in embodiment 2. FIG. 8 is a diagram showing an example of a first screen in embodiment 3.

[0011] (Knowledge, etc. that formed the basis of the present disclosure) At the time the inventors came up with the present disclosure, there were technologies for diagnosing whether a refrigerant leak had occurred, such as that described in Patent Document 1. However, with conventional technologies, if the detection value of a sensor that detects the state of a refrigerant leak is abnormal, the refrigerant leak diagnosis results may lack validity, and the inventors discovered a problem in that there was a risk that a subject, such as a service technician, would not be able to properly determine whether a refrigerant leak had occurred. To solve this problem, the present disclosure has come to constitute the subject matter of the present disclosure. Therefore, the present disclosure provides a refrigerant leak diagnosis system and program that allows a subject to properly determine whether a refrigerant leak has occurred.

[0012] Hereinafter, embodiments will be described in detail with reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed description of already well-known matters or redundant description of substantially the same configuration may be omitted. Note that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0013] (Embodiment 1) [1-1. Configuration] [1-1-1. Configuration of refrigerant leak diagnostic system] Fig. 1 is a diagram showing the configuration of a refrigerant leak diagnostic system 1000 in embodiment 1. The refrigerant leak diagnostic system 1000 is a system that diagnoses a refrigerant leak in an air conditioning apparatus 1. In this embodiment, diagnosing a refrigerant leak includes diagnosing whether a refrigerant leak has occurred, that is, diagnosing the presence or absence of a refrigerant leak. The air conditioning apparatus 1 is an example of a "refrigeration cycle apparatus".

[0014] The refrigerant leak diagnosis system 1000 includes an air conditioning device 1 connected to a network NW. The network NW is a communication network made up of a public line network, a dedicated line, other communication circuits, etc. FIG. 1 illustrates a case in which the refrigerant leak diagnosis system 1000 includes three or more air conditioning devices 1. Note that the number of air conditioning devices 1 included in the refrigerant leak diagnosis system 1000 is not limited to three or more, and may be less than three. The air conditioning device 1 performs air conditioning operation using an indoor unit 2 and an outdoor unit 3 included therein, and the indoor unit 2 air-conditions the conditioned space of the facility in which the indoor unit 2 is installed.

[0015] The air conditioner 1 of this embodiment comprises an indoor unit 2 and an outdoor unit 3. The indoor unit 2 and the outdoor unit 3 are connected by refrigerant piping and control wiring, thereby forming a refrigeration cycle in the air conditioner 1. Note that in Fig. 1, the air conditioner 1 is configured to comprise one indoor unit 2 and one outdoor unit 3, but the number of indoor units 2 and the number of outdoor units 3 comprised by the air conditioner 1 are not limited to one each; there may be one outdoor unit 3 and multiple indoor units 2, or there may be multiple outdoor units 3 and multiple indoor units 2.

[0016] The air conditioning apparatus 1 generates operating data D1 at a predetermined cycle and transmits the generated operating data D1 to a server device 5 connected to the network NW. The server device 5 will be described later. The operating data D1 includes an air conditioning apparatus ID (Identification), information indicating the upload date and time, air conditioning type information indicating the type of air conditioning, set temperature information indicating the set temperature, and detection values ​​of various sensors equipped in the air conditioning apparatus 1. The air conditioning apparatus ID is identification information that uniquely identifies the air conditioning apparatus 1. The upload date and time is the date and time when the operating data D1 is uploaded. Types of air conditioning include cooling, heating, dehumidification, ventilation, etc.

[0017] Examples of sensors included in the air conditioning apparatus 1 include an outdoor air temperature sensor, a discharge temperature sensor, a first superheat sensor, a compressor rotation speed sensor, an intake temperature sensor, a second superheat sensor, an expansion valve opening sensor, and a saturation temperature sensor. The outdoor air temperature sensor detects the outdoor air temperature of the facility in which the air conditioning apparatus 1 is installed. The discharge temperature sensor detects the compressor's discharge temperature (the temperature of the refrigerant being discharged). The first superheat sensor detects the degree of superheat at the compressor's discharge temperature. The compressor rotation speed sensor detects the compressor's rotation speed. The intake temperature sensor detects the compressor's intake temperature (the temperature of the refrigerant being intake). The second superheat sensor detects the degree of superheat at the compressor's intake temperature. The expansion valve opening sensor detects the opening of the expansion valve, which adjusts the refrigerant flow rate. The saturation temperature sensor detects the saturation temperature of the refrigerant being discharged from the compressor.

[0018] The refrigerant leak diagnosis system 1000 includes a terminal device 4. The terminal device 4 is used by a serviceman P who performs a refrigerant leak diagnosis. The terminal device 4 shown in FIG. 1 is a laptop computer, but it may also be a tablet computer, a desktop computer, or a smartphone. The terminal device 4 is connected to a network NW and communicates with a server device 5.

[0019] The refrigerant leak diagnosis system 1000 includes a server device 5. The server device 5 is connected to a network NW and performs information processing with the air conditioning device 1 and the terminal device 4 as clients. Note that in each figure, the server device 5 is represented by a single block, but this does not necessarily mean that the server device 5 is composed of a single device. For example, the server device 5 may be composed of multiple server devices with different processing contents.

[0020] [1-1-2. Configuration of Server Device] Next, a description will be given of the configuration of the server device 5. Fig. 2 is a diagram showing the configuration of the server device 5 and the terminal device 4. The server device 5 includes a server control device 50 and a server communication device 51.

[0021] Before describing the server control device 50, we will explain the server communication device 51. The server communication device 51 has hardware such as a communication circuit that complies with a predetermined communication standard, and communicates with the air conditioning apparatus 1 and the terminal device 4 according to the control of the server control device 50.

[0022] The server control device 50 includes a server processor 500 such as a CPU (Central Processing Unit) or an MPU (Micro Processor Unit), a server memory 510, and an interface circuit for connecting other devices and sensors.

[0023] The server memory 510 is a storage device that stores programs and data. The server memory 510 stores a control program 511, a first management database (DB) 512, and data to be processed by the server processor 500. The server memory 510 has a non-volatile storage area. The server memory 510 also has a volatile storage area and constitutes a work area for the server processor 500. The server memory 510 is constituted by, for example, a read-only memory (ROM) or a random access memory (RAM). The control program 511 is a program that causes the server processor 500 to function as a functional unit, which will be described later.

[0024] Fig. 3 is a diagram showing an example of the first management DB 512. As shown in Fig. 3, the first management DB 512 is a database that manages operating data D1. The first management DB 512 has one record R1 for each air conditioning apparatus 1.

[0025] Record R1 has an air conditioning apparatus ID. Record R1 also has an operating data field. The operating data field holds a plurality of pieces of operating data D1, including the operating data D1 most recently transmitted by the air conditioning apparatus 1. The operating data field also holds operating data D1 for a predetermined period (e.g., one day). In the operating data field, the plurality of pieces of operating data D1 are arranged in chronological order, with the upload dates and times indicated by the operating data D1.

[0026] Record R1 also has set temperature information, outside temperature information, air conditioning type information, model information, years in operation information, years since filling information, and time since startup information. Set temperature information is information indicating the set temperature of the air conditioning apparatus 1. Outside temperature information is information indicating the outside temperature of the facility in which the air conditioning apparatus 1 is installed. Air conditioning type information is information indicating the type of air conditioning performed by the air conditioning apparatus 1. Model information is information indicating the model of the air conditioning apparatus 1. Years in operation information is information indicating the number of years in operation of the air conditioning apparatus 1. The number of years in operation indicated by the years in operation information is updated appropriately. Years since filling information is information indicating the number of years elapsed since the last refrigerant filling. The number of years elapsed indicated by the years since filling information is updated appropriately. Time since startup information is information indicating the time elapsed since the air conditioning apparatus 1 was started up. The elapsed time indicated by the time since startup information is updated appropriately.

[0027] The server processor 500 reads and executes a control program 511 stored in the server memory 510 , thereby functioning as a server communication unit 501 , an update unit 502 , an acquisition unit 503 , a detection value determination unit 504 , and a screen generation unit 505 .

[0028] [1-1-2-1. Server Communication Unit] The server communication unit 501 communicates with the air conditioning apparatus 1 and the terminal device 4 via the server communication device 51.

[0029] [1-1-2-2. Update unit] The update unit 502 updates the contents of record R1 held in the first management DB 512. When the server communication unit 501 receives operating data D1 from the air conditioning apparatus 1, the update unit 502 identifies record R1 of the air conditioning apparatus ID included in the operating data D1 from the first management DB 512. Next, the update unit 502 stores the operating data D1 received by the server communication unit 501 in the operating data field of the identified record R1. When storing the operating data D1, the update unit 502 ensures that the operating data D1 is arranged in the operating data field in the order described above.

[0030] Furthermore, when the server communication unit 501 receives operating data D1 from the air conditioning apparatus 1, the update unit 502 identifies record R1 of the air conditioning apparatus ID included in the operating data D1 from the first management DB 512. Next, the update unit 502 updates the set temperature information and air conditioning type information of the identified record R1 to the set temperature information and air conditioning type information of the operating data D1 received by the server communication unit 501. Furthermore, the update unit 502 updates the outside temperature information of the identified record R1 to the outside temperature indicated by the detected value of the outside temperature sensor included in the operating data D1 received by the server communication unit 501.

[0031] [1-1-2-3. Acquisition unit] The acquisition unit 503 acquires the refrigerant leakage probability of the air conditioning apparatus 1 based on the operating data D1. The acquisition unit 503 processes one record R1, reads the operating data D1 indicating the most recent upload date and time from the record R1 to be processed, and acquires the refrigerant leakage probability based on the read operating data D1. Note that the refrigerant leakage probability indicates the probability that a refrigerant leakage has occurred, and in this embodiment, the larger the value, the higher the probability that a refrigerant leakage has occurred.

[0032] The acquisition unit 503 acquires the refrigerant leakage probability as follows. For example, the acquisition unit 503 acquires the refrigerant leakage probability by inputting the detection values ​​of the various sensors included in the read operating data D1 into a predetermined model and outputting the refrigerant leakage probability from the predetermined model. An example of this predetermined model is a trained model that has machine-learned the refrigerant leakage probability from the detection values ​​of the various sensors included in the operating data D1. Note that this predetermined model is stored in a storage area (e.g., the server memory 510) that can be read by the server processor 500. Furthermore, for example, the acquisition unit 503 acquires the refrigerant leakage probability using a predetermined algorithm that calculates the refrigerant leakage probability using the detection values ​​of the various sensors provided in the air conditioning apparatus 1 as parameters. In this case, the acquisition unit 503 acquires the refrigerant leakage probability by inputting the detection values ​​of the various sensors included in the read operating data D1 into the algorithm and performing an operation to calculate the refrigerant leakage probability.

[0033] [1-1-2-4. Detected value determination unit] The detected value determination unit 504 determines whether the detected values ​​of the sensors included in the air conditioning apparatus 1 are normal or abnormal. The detected value determination unit 504 processes the operating data D1 that was processed by the acquisition unit 503, and determines whether each of the various detected values ​​included in the operating data D1 is normal or abnormal.

[0034] The detected value determination unit 504 determines whether a sensor is normal or abnormal as follows. For example, for each of the various detected values ​​included in the operation data D1, the detected value determination unit 504 determines whether the detected value is within a range considered to be normal or outside the range considered to be normal. This range considered to be normal is determined for each type of sensor. The detected value determination unit 504 determines that a detected value of a sensor determined to be within the range considered to be normal is normal, and determines that a detected value of a sensor determined to be outside the range considered to be normal is abnormal.

[0035] Furthermore, for example, the detected value determination unit 504 determines, for each of various detected values ​​included in the operation data D1, whether the difference between the detected value and a predetermined value is equal to or greater than a predetermined value. The value to be compared with the detected value is determined for each type of sensor. Furthermore, this predetermined value is determined for each type of sensor. The detected value determination unit 504 determines that the detected value of a sensor whose difference is determined to be below the predetermined value is normal, and determines that the detected value of a sensor whose difference is determined to be equal to or greater than the predetermined value is abnormal.

[0036] The above-described determination method of the detected value determination unit 504 is merely an example, and any method based on the sensor detected values ​​included in the driving data D1 can be used. For example, the detected value determination unit 504 may read multiple driving data D1 from the record R1 processed by the acquisition unit 503, identify changes over time in the sensor detected values, and determine that the sensor detected values ​​are abnormal if the identified changes over time show an unusual trend. In this configuration, non-anomalous trends are stored for each sensor type in the server memory 510 or the like, and the detected value determination unit 504 compares the identified changes over time in the detected values ​​with the stored non-anomalous trends. Then, the detected value determination unit 504 determines that the sensor detected values ​​are abnormal if the degree of deviation between the identified changes over time in the detected values ​​and the non-anomalous trend is equal to or greater than a predetermined value.

[0037] [1-1-2-5. Screen Generation Unit] The screen generation unit 505 generates a first screen G1 to be displayed by the terminal device 4. The screen generation unit 505 generates a second screen G2 to be displayed by the terminal device 4 as necessary.

[0038] Here, the first screen G1 and the second screen G2 will be described with reference to FIGS.

[0039] 4 is a diagram showing an example of the first screen G1. The first screen G1 has air conditioning-related information AJ, which is information relating to the air conditioning apparatus 1, for each air conditioning apparatus 1. As will become clearer below, the first screen G1 has air conditioning-related information AJ for each air conditioning apparatus 1 selected by the service technician P or for each air conditioning apparatus 1 that the service technician P is responsible for.

[0040] The air conditioning-related information AJ has a first area A1 and a second area A2. The first area A1 is an area that displays the air conditioning apparatus ID of the corresponding air conditioning apparatus 1.

[0041] The second area A2 displays first information J1 indicating that a refrigerant leak has occurred when the refrigerant leakage probability of the corresponding air conditioning apparatus 1 is equal to or greater than the first threshold. The first information J1 is, for example, information such as "Error" or "Refrigerant Leak Occurred!". When the refrigerant leakage probability of the corresponding air conditioning apparatus 1 is equal to or greater than the first threshold and the detected value of the sensor of the air conditioning apparatus 1 is abnormal, the second area A2 displays second information J2 indicating that the detected value of the sensor of the air conditioning apparatus 1 is abnormal together with the first information J1. The second information J2 is, for example, information such as "Sensor Abnormal." Note that when the refrigerant leakage probability of the corresponding air conditioning apparatus 1 is equal to or greater than the first threshold and the detected value of the sensor of the air conditioning apparatus 1 is not abnormal, the second area A2 does not display the second information J2.

[0042] The second area A2 displays second information J2 when the detection value of the sensor of the air conditioning apparatus 1 is abnormal when the refrigerant leakage probability of the corresponding air conditioning apparatus 1 is less than the first threshold and equal to or greater than the second threshold. The second threshold is a threshold that is smaller than the first threshold. The second area A2 does not display second information J2 when the detection value of the sensor of the air conditioning apparatus 1 is not abnormal when the refrigerant leakage probability of the corresponding air conditioning apparatus 1 is less than the first threshold and equal to or greater than the second threshold. In this case, the second area A2 displays third information J3. The third information J3 is information indicating that there is no problem with the air conditioning apparatus 1, and is information such as "-" or "normal", for example.

[0043] The second area A2 displays third information J3 when the refrigerant leakage probability of the corresponding air conditioning device 1 is less than the second threshold value.

[0044] On the first screen G1 shown in FIG. 4, air conditioning-related information AJ1 is information relating to an air conditioning apparatus 1 assigned an air conditioning apparatus ID of "001." The air conditioning-related information AJ displays first information J1 and second information J2. On the first screen G1 shown in FIG. 4, air conditioning-related information AJ2 is information relating to an air conditioning apparatus 1 assigned an air conditioning apparatus ID of "002." In FIG. 4, the refrigerant leakage probability of this air conditioning apparatus 1 is illustrated as being less than the first threshold and equal to or greater than the second threshold. The air conditioning-related information AJ2 displays third information J3. On the first screen G1 shown in FIG. 4, air conditioning-related information AJ3 is information relating to an air conditioning apparatus 1 assigned an air conditioning apparatus ID of "003." In FIG. 4, the refrigerant leakage probability of this air conditioning apparatus 1 is illustrated as being less than the first threshold and equal to or greater than the second threshold. The air conditioning-related information AJ3 displays second information J2. On the first screen G1 shown in Fig. 4, the air conditioning-related information AJ4 is information relating to the air conditioning apparatus 1 to which the air conditioning apparatus ID "004" has been assigned. In Fig. 4, the refrigerant leakage probability of this air conditioning apparatus 1 is shown as being less than the second threshold. The air conditioning-related information AJ4 displays the third information J3.

[0045] The first screen G1 displays selectable pieces of air conditioning-related information AJ that display the second information J2. In the example of Fig. 4, the air conditioning-related information AJ1 and AJ3 are displayed selectable. When the air conditioning-related information AJ that displays the second information J2 is selected, the terminal device 4 displays the second screen G2.

[0046] 5 is a diagram showing an example of the second screen G2. The second screen G2 displays detailed information about sensors of the air conditioning apparatus 1 corresponding to the selected air conditioning-related information AJ whose detected values ​​indicate an abnormality. Hereinafter, sensors whose detected values ​​indicate an abnormality will be referred to as "abnormal sensors" as appropriate.

[0047] The second screen G2 shows, in a graph, the change over time in the detected value of the abnormal sensor. The second screen G2 also shows, in a graph, the change over time in the detected value of a sensor of the same type as the abnormal sensor among sensors possessed by air conditioning apparatuses 1 other than the air conditioning apparatus 1 having the abnormal sensor. In this embodiment, the second screen G2 shows, in a graph, the change over time in the detected value of a sensor of the same type as the abnormal sensor among sensors possessed by air conditioning apparatuses 1 similar to the air conditioning apparatus 1 having the abnormal sensor (hereinafter referred to as "similar air conditioning apparatuses"). The vertical axis of these graphs is set to the detected value, and the horizontal axis is set to time.

[0048] On the second screen G2 shown in Fig. 5, graph GF1 is a graph showing the change over time in the detected value of the abnormal sensor. Also on the second screen G2 shown in Fig. 5, graphs GF2, GF3, and GF4 are graphs showing the change over time in the detected value of sensors of the same type as the abnormal sensor, among the sensors possessed by the similar air conditioning apparatus.

[0049] The second screen G2 displays each graph in association with detailed information DJ of the corresponding air conditioning device 1. The detailed information DJ includes the air conditioning device ID, model information, years in operation information, years since filling information, air conditioning type information, time since startup information, and outside temperature information.

[0050] On the second screen G2 shown in Fig. 5, the detailed information DJ associated with the graph GF1 is the detailed information DJ of the air conditioning apparatus 1 having an abnormality sensor. Also, on the second screen G2 shown in Fig. 5, the detailed information DJ associated with the graphs GF2, GF3, and GF4 are the detailed information DJ of similar air conditioning apparatuses.

[0051] Returning to the description of the screen generator 505, the screen generator 505 generates the second screen G2 when the second information J2 is to be displayed on the first screen G2. In other words, the screen generator 505 does not generate the second screen G2 when the second information J2 is not to be displayed on the first screen G1. The generation of the first screen G1 and the second screen G2 will be described later.

[0052] 2, the configuration of the terminal device 4 will be described. The terminal device 4 includes a terminal control device 40, a terminal communication device 41, a display 42, and an input interface 43.

[0053] Before describing the terminal control device 40, the terminal communication device 41, the display 42, and the input interface 43 will be described.

[0054] The terminal communication device 41 includes hardware such as a communication circuit conforming to a predetermined communication standard, and communicates with the server device 5. The display 42 is configured with an LED (Light Emitting Diode), an OLED (Organic LED), or the like. The display 42 may be an external device connected to the terminal device 4. The input interface 43 is connected to devices such as an operation switch, a touch input panel, a mouse, and a keyboard, detects input operations by the user P, and outputs the detection results to the terminal control device 40.

[0055] The terminal control device 40 includes a terminal processor 400 such as a CPU or an MPU, a terminal memory 410, and an interface circuit for connecting other devices and sensors. The terminal processor 400 is an example of a "processor."

[0056] The terminal memory 410 is a storage device that stores programs and data. The terminal memory 410 stores a control program 411 and data to be processed by the terminal processor 400. The terminal memory 410 has a non-volatile storage area. The terminal memory 410 also has a volatile storage area and constitutes a work area for the terminal processor 400. The terminal memory 410 is constituted by, for example, a ROM or RAM. The control program 411 is an example of a "program."

[0057] The terminal processor 400 functions as a terminal communication unit 401 , a display unit 402 , and a reception unit 403 by reading and executing a control program 411 stored in the terminal memory 410 .

[0058] The terminal communication unit 401 communicates with the server device 5 via the terminal communication device 41. The display unit 402 displays information on the display 42. In this embodiment, the display unit 402 displays a screen on the display 42. The reception unit 403 receives various inputs from the user P via the input interface 43.

[0059] [1-2. Operation] Next, the operation of each part of the refrigerant leakage diagnosis system 1000 in this embodiment will be described. Fig. 6 is a flowchart showing the operation of the terminal device 4 and the server device 5. In Fig. 6, flowchart FA shows the operation of the terminal device 4, and flowchart FB shows the operation of the server device 5.

[0060] As shown in flowchart FA, the terminal communication unit 401 determines whether or not the terminal device 4 requests a screen to be displayed (step SA1). For example, when the reception unit 403 receives an instruction to start displaying the first screen G1, the terminal communication unit 401 makes a positive determination in step SA1.

[0061] If the terminal communication unit 401 determines that the screen to be displayed by the terminal device 4 is being requested (step SA1: YES), it transmits request information to the server device 5 (step SA2). The request information is information requesting the screen to be displayed by the terminal device 4, and includes the air conditioning device ID of the air conditioning device 1 selected by the service person P, or the air conditioning device ID of the air conditioning device 1 that the service person P is responsible for. The air conditioning device ID included in this request information is input into the terminal device 4 by the service person P or the like before the request information is transmitted.

[0062] As shown in the flowchart FB, the server communication unit 501 receives request information from the terminal device 4 (step SB1).

[0063] Next, the acquisition unit 503 identifies, for each air conditioning apparatus ID included in the request information received in step SB1, a record R1 having the air conditioning apparatus ID from the first management DB 512 (step SB2).

[0064] Next, the obtaining unit 503 obtains the refrigerant leakage probability for each record R1 identified in step SB2 (step SB3).

[0065] Next, the detection value determination unit 504 determines whether the detection value of the sensor included in the air conditioning apparatus 1 is normal or abnormal for each record R1 identified in step SB2 (step SB4).

[0066] Next, the screen generation unit 505 generates a screen to be displayed on the terminal device 4 (step SB5).

[0067] Step SB5 will now be described in detail. The screen generation unit 505 generates air conditioning-related information AJ for each record R1 identified in step SB2. If the refrigerant leakage probability acquired in step SB3 is equal to or greater than the first threshold and the judgment result in step SB4 indicates normal, the screen generation unit 505 generates air conditioning-related information AJ by displaying the air conditioning device ID of record R1 in the first area A1 and first information J1 in the second area A2. Furthermore, if the refrigerant leakage probability acquired in step SB3 is equal to or greater than the first threshold and the judgment result in step SB4 indicates abnormal, the screen generation unit 505 generates air conditioning-related information AJ by displaying the air conditioning device ID of record R1 in the first area A1 and first information J1 and second information J2 in the second area A2. Furthermore, if the refrigerant leakage probability acquired in step SB3 is less than the first threshold and equal to or greater than the second threshold, and the judgment result in step SB4 indicates normal, the screen generation unit 505 generates air conditioning-related information AJ that displays the air conditioning device ID of record R1 in the first area A1 and displays third information J3 in the second area A2. Furthermore, if the refrigerant leakage probability acquired in step SB3 is less than the first threshold and equal to or greater than the second threshold, and the judgment result in step SB4 indicates abnormal, the screen generation unit 505 generates air conditioning-related information AJ that displays the air conditioning device ID of record R1 in the first area A1 and displays second information J2 in the second area A2. Furthermore, if the refrigerant leakage probability acquired in step SB3 is less than the second threshold, the screen generation unit 505 generates air conditioning-related information AJ that displays the air conditioning device ID of record R1 in the first area A1 and displays third information J3 in the second area A2. The screen generator 505 then generates a first screen G1 on which the generated air conditioning-related information AJ is arranged.

[0068] Step SB5 will now be described in more detail. When generating the first screen G1 that displays the second information J2, the screen generation unit 505 also generates the second screen G2. The screen generation unit 505 generates the second screen G2 for each piece of air-conditioning-related information AJ that displays the second information J2.

[0069] The generation of the second screen G2 will be described in detail below. The screen generation unit 505 references the first management DB 512 to identify records R1 of similar air conditioning devices. For example, for each record R1 stored in the first management DB 512, a cosine similarity is calculated based on the record R1 corresponding to the air conditioning-related information AJ displaying the second information J2. In calculating the cosine similarity, at least one of the set temperature information, outside temperature information, air conditioning type information, model information, years in operation information, years since charging information, and time since startup information contained in the record R1 is used as a parameter. The screen generation unit 505 then identifies records R1 from the first management DB 512 whose calculated cosine similarity is equal to or greater than a predetermined value as records R1 of similar air conditioning devices. Furthermore, for example, an overall value of the record R1 is calculated for each record R1 stored in the first management DB 512. In calculating this value, at least one of the set temperature information, outside temperature information, air conditioning type information, model information, years in operation information, years since filling information, and time since startup information contained in record R1 is substituted as a parameter into a predetermined algorithm. The screen generation unit 505 calculates the difference between the overall value calculated from record R1 of the air conditioning-related information AJ displaying second information J2 and the overall value calculated from record R1 in the first management DB 512, and identifies from the first management DB 512, as record R1 of a similar air conditioning device, the record R1 of the air conditioning device 1 for which the calculated difference is less than a predetermined value.

[0070] Next, the screen generator 505 generates detailed information DJ using various information contained in record R1 of the air conditioning-related information AJ that displays the second information J2. Next, the screen generator 505 generates a graph showing changes over time in the detected value of the abnormality sensor from the operating data D1 of record R1 of the air conditioning-related information AJ that displays the second information J2.

[0071] The screen generator 505 also generates detailed information DJ using various information contained in the record R1 of the similar air conditioning device. Next, the screen generator 505 generates a graph showing changes over time in the detected values ​​of the same type of sensor as the abnormal sensor, from the operating data D1 of the record R1 of the similar air conditioning device.

[0072] After generating the graph and detailed information DJ, the screen generating unit 505 generates a second screen G2 that displays the generated graph and detailed information DJ.

[0073] Returning to the explanation of flowchart FB, once screen generation unit 505 has generated the screen, server communication unit 501 transmits response information to the request information received in step SB1 to terminal device 4 (step SB6). The response information transmitted in step SB6 includes screen data of the screen generated in step SB5.

[0074] As shown in flowchart FA, terminal communication unit 401 receives response information from server device 5 (step SA3).

[0075] Next, the display unit 402 displays, on the display 42, a screen indicated by the screen data included in the response information received in step SA3 (step SA4).

[0076] Step SA4 will now be described in detail. When the display of step SA4 starts, the display unit 402 displays the first screen G1 on the display 42. When the reception unit 403 receives an operation to select the air-conditioning-related information AJ that displays the second information J2 on the first screen G1, the display unit 402 displays the second screen G2 on the display 42 in a manner that switches the screen. Note that the operation to select the air-conditioning-related information AJ that displays the second information J2 is an example of a "predetermined operation."

[0077] [1-3. Effects, etc.] As described above, the refrigerant leak diagnostic system 1000 that diagnoses a refrigerant leak in the air conditioning apparatus 1 includes a display unit 402 that displays first information J1 indicating that a refrigerant leak has occurred when the refrigerant leak probability based on operating data D1 including detection values ​​of sensors possessed by the air conditioning apparatus 1 is equal to or greater than a first threshold, and that displays second information J2 indicating that the detection value of the sensor is abnormal when the detection value of the sensor is abnormal. The display unit 402 displays the first information J1 and the second information J2 on the same first screen G1.

[0078] This allows the service technician P to examine the validity of the refrigerant leak diagnosis result that indicates a refrigerant leak. Therefore, the service technician P can determine whether or not a refrigerant leak exists based on the validity of the refrigerant leak diagnosis result, allowing the service technician P to properly determine whether or not a refrigerant leak exists.

[0079] The display unit 402 displays second information J2 on the first screen G1 when the probability of refrigerant leakage is less than the first threshold and greater than or equal to a second threshold that is lower than the first threshold, and when the sensor detection value is abnormal, and does not display second information J2 on the first screen G1 when the sensor detection value is not abnormal.

[0080] This allows the service technician P to determine whether or not there is a sensor abnormality even in a situation where it can be determined that there is no refrigerant leak. Therefore, even in a situation where it can be determined that there is no refrigerant leak, the validity of the refrigerant leak diagnosis result can be examined. Therefore, the service technician P can more accurately determine whether or not there is a refrigerant leak.

[0081] The refrigerant leak diagnosis system 1000 includes a reception unit 403 that receives an operation to select air conditioning-related information AJ that displays second information J2 on the first screen G1. When the reception unit 403 receives the selection operation, the display unit 404 displays a second screen G2 that displays detailed information about the abnormal sensor.

[0082] This allows the service technician P to access a screen that displays detailed information about the abnormal sensor, allowing the service technician P to examine the validity of the refrigerant leak diagnosis results based on the detailed information about the abnormal sensor, thereby enabling the service technician P to more accurately determine whether or not a refrigerant leak exists.

[0083] The second screen G2 displays the detected value of the abnormal sensor and the detected value of a sensor of the same type as the abnormal sensor that is possessed by an air conditioner 1 other than the air conditioner 1 that has the abnormal sensor.

[0084] This allows the service technician P to check how the detected value of the abnormal sensor compares with the detected values ​​of the sensors of the other air conditioning devices 1, and therefore the validity of the refrigerant leak diagnosis results can be accurately examined, allowing the service technician P to more appropriately determine whether or not a refrigerant leak exists.

[0085] The second screen G2 displays the detected value of the abnormal sensor and the detected value of the same type of sensor as the abnormal sensor possessed by the similar air conditioning apparatus.

[0086] This allows the service technician P to check how the detected value of the abnormal sensor compares with the detected values ​​of sensors in other similar air conditioning devices 1, allowing the validity of the refrigerant leak diagnosis results to be examined more accurately, thereby enabling the service technician P to more appropriately determine whether or not a refrigerant leak exists.

[0087] The control program 411 causes the terminal processor 400 to function as a display unit 402 that displays first information J1 indicating that a refrigerant leak is occurring as a diagnosis result of a refrigerant leak in the air conditioning apparatus 1 when the probability of a refrigerant leak based on operating data D1 including detection values ​​of sensors possessed by the air conditioning apparatus 1 is equal to or greater than a first threshold, and that displays second information J2 indicating that the detection value of the sensor is abnormal when the detection value of the sensor is abnormal. The display unit 402 displays the first information J1 and the second information J2 on the same first screen G1.

[0088] This provides the same effects as those of the refrigerant leakage diagnosis system 1000 described above.

[0089] (Embodiment 2) Next, a description will be given of embodiment 2. [2-1. Configuration] With regard to the configuration of each part of refrigerant leak diagnosis system 1000 in embodiment 2, detailed description of the configuration similar to the configuration of each part of refrigerant leak diagnosis system 1000 in embodiment 1 will be omitted as appropriate.

[0090] In the second embodiment, the terminal device 4 displays a third screen G3 instead of the second screen G2. Fig. 7 is a diagram showing an example of the third screen G3.

[0091] The third screen G3 displays detailed information about the abnormal sensor, similar to the second screen G2.

[0092] The third screen G3 shows, in a graph, the change over time in the detected value of the abnormal sensor. The third screen G3 also shows, in a graph, the change over time in the detected value of a sensor that has a correlation with the abnormal sensor, among the sensors included in the air conditioning apparatus 1 that has an abnormal sensor.

[0093] 7, graph GF4 is a graph showing the change over time in the detected value of the abnormal sensor, and shows the change over time in the detected value of the discharge temperature sensor. In the third screen G3 shown in FIG. 7, graph GF5 is a graph showing the change over time in the detected value of the sensor correlated with the abnormal sensor, and shows the change over time in the detected value of the compressor rotation speed sensor.

[0094] [2-2. Operation] Next, a description will be given of the operation of each unit of the refrigerant leakage diagnosis system 1000 in embodiment 2. In embodiment 2, the operation of the screen generator 505 is different from embodiment 1.

[0095] In this embodiment, the screen generation unit 505 generates the third screen G3 when the second information J2 is displayed on the first screen G2. In other words, the screen generation unit 505 does not generate the third screen G3 when the second information J2 is not displayed on the first screen G1.

[0096] The screen generation unit 505 generates the third screen G3 as follows: When generating the first screen G1 that displays the second information J2, the screen generation unit 505 also generates the third screen G3. The screen generation unit 505 generates the third screen G3 for each piece of air conditioning-related information AJ that displays the second information J2.

[0097] The screen generation unit 505 reads information indicating the upload date and time, the detected value of the abnormal sensor, and the detected value of the sensor correlated with the abnormal sensor from the operating data D1 of the record R1 used to generate the air-conditioning-related information AJ displaying the second information J2. Note that the sensor correlated with the abnormal sensor is predetermined for each sensor. Next, the screen generation unit 505 generates a graph showing the change over time in the detected value of the abnormal sensor based on the detected value of the abnormal sensor and the information indicating the upload date and time. The screen generation unit 505 also generates a graph showing the change over time in the detected value of the sensor correlated with the abnormal sensor based on the detected value of the sensor correlated with the abnormal sensor and the information indicating the upload date and time. The screen generation unit 505 then generates a third screen G3 that displays these graphs together.

[0098] In the second embodiment, the operation related to the screen display is different from that in the first embodiment. More specifically, when an operation to select the air-conditioning-related information AJ that displays the second information J2 is performed on the first screen G1, the display unit 402 displays the third screen G3.

[0099] [2-3. Effects, etc.] As described above, the refrigerant leak diagnosis system 1000 includes a reception unit 403 that receives an operation to select air conditioning-related information AJ that displays second information J2 on the first screen G1. When the reception unit 403 receives the selection operation, the display unit 404 displays a third screen G3 that displays detailed information about the abnormal sensor. The third screen G3 displays the detection value of the abnormal sensor and the detection value of a sensor that has a correlation with the abnormal sensor among the sensors included in the air conditioning apparatus 1 that has the abnormal sensor.

[0100] According to this, by displaying the detection value of the abnormal sensor and the detection value of the sensor correlated with the abnormal sensor, if the detection value of the abnormal sensor does not correlate with the detection value of the correlated sensor, the service technician P can know that the abnormal sensor is broken, and if the detection value of the abnormal sensor correlates with the detection value of the correlated sensor, the service technician P can know that there is a cause other than the abnormal sensor. Therefore, the validity of the refrigerant leak diagnosis result can be examined, including whether the abnormal sensor is actually abnormal. This allows the service technician P to more accurately determine whether or not a refrigerant leak exists.

[0101] (Embodiment 3) Next, a description will be given of embodiment 3. [3-1. Configuration] With regard to the configuration of each part of refrigerant leak diagnosis system 1000 in embodiment 3, detailed description of the configuration similar to the configuration of each part of refrigerant leak diagnosis system 1000 in embodiment 1 will be omitted as appropriate.

[0102] In the third embodiment, the display content of the air conditioning-related information AJ differs from that in the first embodiment, which will be described in detail with reference to FIG.

[0103] 8 is a diagram showing an example of the first screen G1. In the second area A2 of the air conditioning-related information AJ, when the refrigerant leakage probability of the corresponding air conditioning apparatus 1 is equal to or greater than the first threshold, if the detection value of the sensor of the air conditioning apparatus 1 is abnormal, fourth information J4 indicating that the refrigerant leakage diagnosis result is invalid is displayed together with the first information J1. The fourth information J4 is, for example, information such as "The diagnosis result is invalid." Note that, when the refrigerant leakage probability is other than the first threshold, the second area A2 displays the same information as in the first embodiment.

[0104] [3-2. Operation] The operation of the third embodiment is the same as that of the first embodiment, except that the screen generator 505 generates the first screen G1 capable of displaying the fourth information J4.

[0105] [3-3. Effects, etc.] As explained above, the refrigerant leak diagnostic system 1000 that diagnoses a refrigerant leak in the air conditioning apparatus 1 includes a display unit 402 that displays first information J1 indicating that a refrigerant leak has occurred when the probability of a refrigerant leak based on operating data D1 including detection values ​​of sensors possessed by the air conditioning apparatus 1 is equal to or greater than a first threshold. When the detection value of the sensor is abnormal, the display unit 402 displays, on the same screen as the first information J1, that the refrigerant leak diagnosis result lacks validity.

[0106] Furthermore, the control program 411 causes the terminal processor 400 to function as a display unit 402 that displays first information J1 indicating that a refrigerant leak has occurred, when the probability of a refrigerant leak based on operating data D1 including detection values ​​of sensors possessed by the air conditioning apparatus 1 is equal to or greater than a first threshold value. When the detection values ​​of the sensors are abnormal, the display unit 402 displays on the same screen as the first information J1 that the refrigerant leak diagnosis result lacks validity.

[0107] This provides the same effects as those of the first embodiment.

[0108] (Other Embodiments) As described above, the above-mentioned first, second, and third embodiments have been described as examples disclosed in the present application. However, the technology in the present disclosure is not limited to these, and can also be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. Furthermore, it is also possible to combine the components described in the above-mentioned first, second, and third embodiments to create new embodiments. Therefore, other embodiments will be described below as examples.

[0109] In the above-described first, second, and third embodiments, the air conditioner 1 is exemplified as the "refrigeration cycle apparatus." However, the "refrigeration cycle apparatus" is not limited to the air conditioner 1, and may be any apparatus that employs a refrigeration cycle, such as a refrigerator or a showcase.

[0110] In another embodiment, the display unit 402 may generate at least one of the first screen G1, the second screen G2, and the third screen G3. In this case, the terminal device 4 receives information necessary for generating the screen (information contained in the record R1) from the server device 5.

[0111] In the above-described embodiment, the second screen G2 is displayed by switching the screen. In other embodiments, the second screen G2 may be displayed in another manner, such as side-by-side with the first screen G1. In other embodiments, the third screen G3 may be displayed in another manner, such as side-by-side with the first screen G1.

[0112] In the above-described embodiment, a configuration in which the third screen G3 is displayed instead of the second screen G2 is exemplified, but in other embodiments, the third screen G3 may be displayed together with the second screen G2.

[0113] In the above-described embodiment, the example was given of the case where the person displaying the first screen G1, the second screen G2, and the third screen G3 is a serviceman P, but in other embodiments, the person in question may be an administrator who manages the air conditioning device 1, or the owner or manager of the facility where the air conditioning device 1 is installed.

[0114] In the above-described embodiment, the second screen G2 or the third screen G3 is displayed when the reception unit 403 receives an operation to select the air conditioning-related information AJ that displays the second information J2. In other embodiments, the second screen G2 or the third screen G3 may be displayed by another operation. For example, in other embodiments, a software button that displays the second screen G2 or the third screen G3 may be provided on the first screen G1, and the second screen G2 or the third screen G3 may be displayed when the reception unit 403 receives an operation to select the software button.

[0115] In the second embodiment described above, a discharge temperature sensor is used as an example of the abnormality sensor, and a compressor rotation speed sensor is used as an example of the sensor correlated with the abnormality sensor. In other embodiments, the combination of the abnormality sensor and the sensor correlated with the abnormality sensor is not limited to the combination of these two types of sensors. For example, a combination of a sensor that detects the intake superheat of the compressor and a sensor that detects the discharge superheat of the compressor may also be used.

[0116] The terminal processor 400 and the server processor 500 may be configured with a single processor or multiple processors. These processors may be hardware programmed to implement the corresponding functional units. That is, these processors may be configured with, for example, an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

[0117] The configurations of the terminal device 4 and the server device 5 shown in Figure 2 are merely examples, and the specific implementation form is not particularly limited. In other words, it is not necessarily necessary to implement hardware corresponding to each unit individually, and it is also possible to implement a configuration in which a single processor executes a program to realize the functions of each unit. Furthermore, some of the functions realized by software in the above-mentioned embodiment may be implemented by hardware, or some of the functions realized by hardware may be implemented by software.

[0118] The step units of the operation shown in Figure 6 are divided according to the main processing content to make the operation easier to understand, and the operation is not limited by the way the processing units are divided or the names of the processing units. The operation may be divided into more step units depending on the processing content. Furthermore, one step unit may be divided so that it includes more processing. Furthermore, the order of the steps may be changed as appropriate within the scope of the present disclosure.

[0119] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, etc. may be made within the scope of the claims or their equivalents.

[0120] (Additional Notes) The above description of the embodiments discloses the following techniques.

[0121] (Technology 1) A refrigerant leak diagnosis system for diagnosing a refrigerant leak in a refrigeration cycle device includes a display unit that displays first information indicating the occurrence of a refrigerant leak when a refrigerant leak probability based on operating data including a detection value of a sensor provided in the refrigeration cycle device is equal to or greater than a first threshold, and displays second information indicating the abnormality of the detection value of the sensor when the detection value of the sensor is abnormal, and the display unit displays the first information and the second information on the same first screen. This allows a subject to consider the validity of a refrigerant leak diagnosis result indicating the occurrence of a refrigerant leak. Therefore, the subject can determine the presence or absence of a refrigerant leak based on the validity of the refrigerant leak diagnosis result, allowing the subject to properly determine the presence or absence of a refrigerant leak.

[0122] (Technology 2) The refrigerant leak diagnosis system according to Technology 1, wherein the display unit displays the second information on the first screen when the refrigerant leak probability is less than the first threshold and equal to or greater than a second threshold lower than the first threshold, and when the detected value of the sensor is abnormal, and does not display the second information on the first screen when the detected value of the sensor is not abnormal. This allows the subject to determine whether or not there is a sensor abnormality even in a situation where it is possible to determine that there is no refrigerant leak. Therefore, even in a situation where it is possible to determine that there is no refrigerant leak, the subject can examine the validity of the refrigerant leak diagnosis result. Therefore, the subject can more accurately determine whether or not there is a refrigerant leak.

[0123] (Technology 3) The refrigerant leak diagnosis system according to Technology 1 or Technology 2 further includes a reception unit that receives a predetermined operation on the first screen, and the display unit, when the reception unit receives the predetermined operation, displays a second screen that displays detailed information about the abnormal sensor, which is the sensor that indicates an abnormality detection value. This allows the subject to access the screen that displays the detailed information about the abnormal sensor, allowing the subject to consider the validity of the refrigerant leak diagnosis result based on the detailed information about the abnormal sensor. This allows the subject to more accurately determine whether or not a refrigerant leak exists.

[0124] (Technology 4) In the refrigerant leak diagnosis system according to Technology 3, the second screen displays the detected value of the abnormal sensor and the detected value of a sensor of the same type as the abnormal sensor in a refrigeration cycle device other than the refrigeration cycle device having the abnormal sensor. This allows the subject to check how the detected value of the abnormal sensor compares with the detected values ​​of sensors in other refrigeration cycle devices, thereby enabling the subject to accurately examine the validity of the refrigerant leak diagnosis result. This allows the subject to more accurately determine whether or not a refrigerant leak exists.

[0125] (Technology 5) The refrigerant leak diagnosis system according to Technology 4, wherein the second screen displays the detected value of the abnormal sensor and the detected value of a sensor of the same type as the abnormal sensor in a refrigeration cycle device similar to the refrigeration cycle device having the abnormal sensor. This allows the subject to check how the detected value of the abnormal sensor compares with the detected values ​​of sensors in other similar refrigeration cycle devices, thereby more accurately examining the validity of the refrigerant leak diagnosis results. This allows the subject to more appropriately determine whether or not a refrigerant leak exists.

[0126] (Technology 6) The refrigerant leak diagnosis system according to any one of Technology 1 to Technology 5, further comprising a reception unit that receives a predetermined operation on the first screen, and the display unit, when receiving the predetermined operation, displays a third screen that displays detailed information about the abnormal sensor, which is the sensor that indicates an abnormality detection value. The third screen displays the detection value of the abnormal sensor and the detection value of a sensor correlated with the abnormal sensor among the sensors included in the refrigeration cycle device that includes the abnormal sensor. By displaying the detection value of the abnormal sensor and the detection value of the sensor correlated with the abnormal sensor, if the detection value of the abnormal sensor is not correlated with the detection value of the correlated sensor, the subject can understand that the abnormal sensor is malfunctioning. If the detection value of the abnormal sensor is correlated with the detection value of the correlated sensor, the subject can understand that there is a factor other than the abnormal sensor. This allows the validity of the refrigerant leak diagnosis results to be examined, including whether the abnormal sensor is actually abnormal. This allows the subject to more accurately determine whether or not a refrigerant leak exists.

[0127] (Technology 7) A refrigerant leakage diagnosis system for diagnosing a refrigerant leakage in a refrigeration cycle device, comprising: a display unit that displays first information indicating that a refrigerant leakage has occurred when a refrigerant leakage probability based on operating data including a detection value of a sensor provided in the refrigeration cycle device is equal to or greater than a first threshold, and when a detection value of the sensor is abnormal, the display unit displays on the same screen as the first information that the refrigerant leakage diagnosis result is invalid. This achieves the same effects as the refrigerant leakage diagnosis system described in Technology 1.

[0128] (Technology 8) A program that causes a processor to function as a display unit that displays first information indicating that a refrigerant leak is occurring as a diagnosis result of a refrigerant leak in the refrigeration cycle device when a refrigerant leakage probability based on operating data including a detection value of a sensor provided in the refrigeration cycle device is equal to or greater than a first threshold, and that displays second information indicating that the detection value of the sensor is abnormal when the detection value of the sensor is abnormal, and the display unit displays the first information and the second information on the same first screen. This achieves the same effects as the refrigerant leakage system described in Technology 1.

[0129] (Technology 9) A program that causes a processor to function as a display unit that displays first information indicating that a refrigerant leak is occurring as a diagnosis result of a refrigerant leak in the refrigeration cycle device when a refrigerant leak probability based on operating data including a detection value of a sensor possessed by the refrigeration cycle device is equal to or greater than a first threshold, and when the detection value of the sensor is abnormal, the display unit displays on the same screen as the first information that the diagnosis result of the refrigerant leak is invalid. This achieves the same effects as the refrigerant leakage system described in Technology 1.

[0130] As described above, the refrigerant leakage diagnosis system and program according to the present invention can be used to diagnose refrigerant leakage in a refrigeration cycle device.

[0131] REFRIGERATION CYCLE APPARATUS 1 Air conditioner (refrigeration cycle apparatus) 2 Indoor unit 3 Outdoor unit 4 Terminal device 5 Server device 40 Terminal control device 41 Terminal communication device 42 Display 43 Input interface 50 Server control device 51 Server communication device 400 Terminal processor (processor) 401 Terminal communication unit 402 Display unit 403 Reception unit 410 Terminal memory 411 Control program (program) 500 Server processor 501 Server communication unit 502 Update unit 503 Acquisition unit 504 Detection value determination unit 505 Screen generation unit 510 Server memory 511 Control program 512 First management DB 1000 Refrigerant leak diagnosis system A1 First area A2 Second area AJ Air conditioning related information AJ1 Air conditioning related information AJ2 Air conditioning related information AJ3 Air conditioning related information AJ4 Air conditioning related information D1 Operation data DJ Detailed information G1 First screen G2 Second screen G3 Third screen J1 First information J2 Second information J3 Third information J4 Fourth information P Service technician

Claims

1. A refrigerant leakage diagnostic system for diagnosing refrigerant leakage in a refrigeration cycle device, comprising a display unit that displays first information indicating that a refrigerant leakage has occurred when the probability of refrigerant leakage based on operating data including a detection value of a sensor possessed by the refrigeration cycle device is equal to or greater than a first threshold, and that displays second information indicating that the detection value of the sensor is abnormal when the detection value of the sensor is abnormal, and the display unit displays the first information and the second information on the same first screen.

2. The refrigerant leakage diagnosis system of claim 1, wherein the display unit: displays the second information on the first screen when the refrigerant leakage probability is less than the first threshold and equal to or greater than a second threshold lower than the first threshold, and when the detection value of the sensor is abnormal; and does not display the second information on the first screen when the detection value of the sensor is not abnormal.

3. A refrigerant leakage diagnosis system as described in claim 1 or 2, further comprising a reception unit that receives a predetermined operation on the first screen, and the display unit, when the reception unit receives the predetermined operation, displays a second screen that displays detailed information about the abnormality sensor, which is the sensor that indicates an abnormality detection value.

4. The refrigerant leakage diagnosis system of claim 3, wherein the second screen displays the detection value of the abnormal sensor and the detection value of a sensor of the same type as the abnormal sensor that is possessed by a refrigeration cycle device other than the refrigeration cycle device that has the abnormal sensor.

5. The refrigerant leakage diagnosis system of claim 4, wherein the second screen displays the detection value of the abnormal sensor and the detection value of the sensor of the same type as the abnormal sensor possessed by the refrigeration cycle device similar to the refrigeration cycle device having the abnormal sensor.

6. A refrigerant leakage diagnosis system as described in claim 1 or 2, further comprising a reception unit that receives a predetermined operation on the first screen, wherein the display unit, when receiving the predetermined operation, displays a third screen that displays detailed information of the abnormal sensor, which is the sensor that indicates an abnormality detection value, and the third screen displays the detection value of the abnormal sensor and the detection value of a sensor that has a correlation with the abnormal sensor among the sensors of the refrigeration cycle device that has the abnormal sensor.

7. A refrigerant leakage diagnostic system for diagnosing refrigerant leakage in a refrigeration cycle device, comprising: a display unit that displays first information indicating that a refrigerant leakage has occurred when the probability of refrigerant leakage based on operating data including a detection value of a sensor possessed by the refrigeration cycle device is equal to or greater than a first threshold value; and when the detection value of the sensor is abnormal, the display unit displays on the same screen as the first information that the refrigerant leakage diagnosis result lacks validity.

8. A program that causes a processor to function as a display unit that displays first information indicating that a refrigerant is leaking as a diagnosis result of a refrigerant leak in a refrigeration cycle device when the probability of a refrigerant leak based on operating data including a detection value of a sensor possessed by the refrigeration cycle device is equal to or greater than a first threshold, and that displays second information indicating that the detection value of the sensor is abnormal when the detection value of the sensor is abnormal, and that displays the first information and the second information on the same first screen.

9. A program that causes a processor to function as a display unit that displays first information indicating that a refrigerant leak has occurred as a diagnostic result of a refrigerant leak in the refrigeration cycle device when the probability of a refrigerant leak based on operating data including a detection value of a sensor possessed by the refrigeration cycle device is equal to or greater than a first threshold value, and the display unit displays, on the same screen as the first information, a message indicating that the diagnostic result of a refrigerant leak lacks validity when the detection value of the sensor is abnormal.

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